You're not a resident of IL for tax purposes until the day you begin living in your new home in IL. Temporary lodging such as a hotel room or Airbnb does not establish residency.
But your income from working in IL is taxable by IL. So for 2018 you will have to file a non-resident IL return.
In the My Info section of TurboTax, enter TX as your State of Residence, but answer Yes to the question about having income from other states. Enter IL as the Other State.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
